High Temperature Safety

If you are running high temperature engineering resins, to enhance purging and promote safety, try the following tips:

  • Run Dyna-Purge at the lower end of the temperature range for the processing resin.
  • Introduce Dyna-Purge and purge with the screw in the forward position.
  • When purge is exiting the machine, the following will help to reduce fumes and the potential for auto ignition:
    – Purge piles should be collected as small, flat, thin shapes or thin strands to allow for rapid cooling.
    – Purge into cold water.
    – Make sure the melt temperature does not exceed 715°F (379° C); if necessary, reduce screw speed.
  • Keep the barrel full to minimize degradation.
  • If shutting down, decrease temperatures as quickly as possible. If temperatures are still above 600°F (316°C) after 15 minutes, displace the Dyna-Purge with another barrelful as temperatures continue to come down. Repeat if necessary.